Method of repairing furnace roofs



June 16, 192s. 1,542,351

J. M. ANDREW ET AL METHOD OF REPAIRING FURNACE ROOFS Filed Sept. 1 1923 2 Sheets-Sheet 1 Wine-.95 -f7zonzfor.s:

6/) wneg June 16, 1925.

J. M. ANDREW ET AL METHOD OF REPAIRING FURNACE ROOFS Filed'Sept. 17, 1923 2 Sheets-Sheet 2 Fgz4.

WWIHH Hi VI) MM Z (h w Patented June 16, 1925.

UNITED STATES PATENT OFFICE.

JAMES M. ANDREW, OF FARRELL, AND RALPH T. HADLEY, F SHARON, PENNSYL- VANIA.

METHOD OF REPAIRING FURNACE ROOFS.

Application filed September 17, 1923. Serial No. 663,153.

To all whom it may concern:

Be it known that we, JAMFsM. ANDRE and RALPH T. HADLEY, citizens of the United States, and residents, respectively,

of Farrell and Sharon, both in the county of Mercer and State of Pennsylvania, have invented certain new and useful Improvements in Methods of Repairing Furnace Roofs, of which the followlng is a specification.

This invention relates to methods of repairing holes in self supporting brick roof structures, such as open-hearth furnace roofs and the like, and has for one of its objects the eliminating of the necessity for workmen being under and on top of the roof being repaired, thus preventing the injury of workmen falling off the old roof.

Another object is to provide a method by which the roof of an open-hearth furnace or the like may be repaired as soon as a heat is tapped out and the furnace partly charged A further object is to provide a method which will greatly reduce the labor necessary under all the previous methods, thus greatly reducing the cost of the repairs.

In the drawings, Figure 1 is a transverse .sectional elevation through an open-hearth furnace, showing a break or hole being repaired by our improved method.

Figure 2 is a top plan of a portion of an "open-hearth furnace, likewise illustrating the practice of our improved method.

Figures 3 and 4 are, respectively, a side elevation and top plan of the patching or supporting tool used in carrying out our invention.

Referring more particularl to the drawings, the letter A designates t e open-hearth furnace of Figures 1 and 2 as a whole, which is of an ordinary and well known form, and comprises a hearth 2, side walls 3 and top 4. The usual buckstays 5 are shown supporting the side walls, and tie beams 6 are secured along the upper ends of the buckstays.

The roof 4: of the furnace A is shown with a break or hole 7 about to be repaired.

Our improved repairing tool B comprises an elongated plate 8 for supporting the bri'cks used to fill the hole 7, and a lever 9 for supporting and manipulating the lplate.

The plate 8 is preferably curved ongitudinally to correspond with the curvature of. the roof, is of greater length than the aperture, and at least as wide as a single row of bricks. The lever 9 is bent at right angles adjacent its lower end so that its bent end forms a bearing portion 10 which is pivotally secured to the under side of the plate 8, while the main portion thereof extends along the side of the plate 8 and projects an appreciable distance beyond the e1 I21d of the plate and terminates in a handle In carrying out our invention aportable scafi'old 14 is hooked over the tie beams 6 and serves to support the workmen.

In practicing our improved method as illustrated in Figures 1 and 2 the scafi'old 14 is first mounted in osition to support the workmen. The repalr tool B is then mounted so that the plate 8 extends across the hole in the direction of the rows of brick and is positioned so as to support the first row of bricks to be laid, the lever 9 being projected out over the side wall of the furnace and held by one of the workmen. By bearing down on the lever the workman, due to the fulcruming of the lever on the side of the furnace, is enabled to hold the plate in position and support the whole row of bricks. The bricks are laid up on the plate 8 in the usual manner, and as the first row is completed so that it will support itself, the tool B is moved forward and the next row laid up, and this operation is repeated until all but the last row is laid up. When sufficient space only for the last row remains the tool B is removed and the last row is laid up with wedge shaped bricks or in any other usual or suitable way.

It will be understood that a row of bricks, as the term is used herein, may include either a single or a multiple row, the plate 8, of course, being made of corresponding width to accommodate the n ber of single rows or lines. Also the row 0 bricks is not necessarily limited to bricks arranged in alinement with one another, but may be a row of bricks with their ends curved or staggered in various Ways.

It will'be readil appreciated that the use of this method, w ile illustrated in connectionwith an open-hearth furnace, is not limited to such use but may be used for repairing holes in other self supporting or arched roof structures and may be used to support other material than bricks.

We claim 1. The method of repairing holes in openhearth furnace roofs and the like, which are composed of a series of bricks or blocks and V successive row of bricks.

2. The method of repairing holes in openhearth furnace roofs and the like, which are composed of a series of bricks or blocks and are self supporting, which consists in mounting an elongated brick supporting plate within the furnace, applying force to the plate to raise and hold said plate in position to engage the bottom face of the bricks used in repairing the roof, placing a series of bricks on said plate in the usual manner of laying up bricks, until a row of bricks are laid completely across the hole to be repaired, when said row of bricks will be self supporting, and then advancing said plate to receive the next adjacent row of bricks, and repeating the operation for each successive row of bricks until only a narrow space remains to be filled, and then laying wedge shaped bricks in this space to complete the repair.

3. In the repairing of holes in open hearth furnace roofs and the like which are composed of a series of bricks or blocks and are self-supporting, the method which consists in mounting a brick supporting plate within the furnace, providing a device engaging said plate and extending beyond the side wall of the furnace and applying force to said device beyond said side wall so as to hold said plate in position to engage the bottom face of the bricks to be used in repairing the roof, and placing a series of bricks on said plate in a row in the usual manner of laying of bricks until the said bricks are self-supporting.

4. The method of repairing holes in openhearth furnace roofs and the like which are composed of a series of bricks or blocks and are self-supporting, which consists in mounting an elongated brick supporting plate Within the furnace, manually applying force to said plate by lever mechanism extending beyond the side wall of the furnace to raise and hold said plate in position to engage the bottom face of the bricks used in repairing the roof, placing a series of bricks on said plate in a row in the usual manner of laying up bricks until a row of bricks are laid completely across the holeto be repaired, when said row of bricks will be self-supporting, and repeating the operation for successive rows of bricks.

5. The method of repairing holes in open hearth furnace roofs and the like which are composed of a series of bricks or blocks and are self-supporting, which consists in mounting an elongated brick supporting plate within the furnace, manually applying force to said plate by lever mechanism extending beyond the side wall of the furnace to raise and hold said plate in position to engage the bottom face of the bricks used in repairing the roof, placing a series of bricks on said plate in a row in the usual manner of laying up, bricks until a row of bricks are laid completely across the hole to be repaired, when said row of bricks will be self-supporting and repeating the operation for successive rows of bricks until a space sufficient for a single row only of bricks remains to be filled, and then removing said plate through said space and finally laying wedge shaped bricks in this space to complete the repair.

In testimony whereof we have hereunto set our hands.

JAMES M. ANDREW. RALPH T. HADLEY. 

